biro

/ˈbaɪ.ɹəʊ/

//ˈbaɪ.ɹəʊ// noun

By · According to Wiktionary data (CC BY-SA) ·

"biro" is a 4-letter English headword indexed on PlainSpell.

The verdict

“biro” is an uncommon English word, ranked #64,932 in English word frequency and used as a noun.

#64,932
frequency rank, English
4
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A Biro brand ballpoint pen.

Key facts for biro
PropertyValue
Headwordbiro
LanguageEnglish
Part of speechNoun
IPA/ˈbaɪ.ɹəʊ/
Letters4
Frequency rank#64,932
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “biro” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). biro lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for biro is 4 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈbaɪ.ɹəʊ/. Corpus data places it at rank #64,932 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

biro has no tracked misspelling variants, suggesting the orthography follows predictable English patterns. This headword has no recorded confusable partner, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: Genericized trademark of BIRO, named after László Bíró, the inventor of the first commercially succesful ballpoint pen. The correct English form is biro, spelled B-I-R-O.

Definition

  1. 1
    A Biro brand ballpoint pen.
  2. 2
    Any ballpoint pen.
  3. 3
    Ink from a ballpoint pen.

Etymology

Genericized trademark of BIRO, named after László Bíró, the inventor of the first commercially succesful ballpoint pen.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "biro"?
"biro" is spelled B-I-R-O. The IPA pronunciation is /ˈbaɪ.ɹəʊ/.
What does "biro" mean?
As a noun, "biro" means: A Biro brand ballpoint pen.
How do you pronounce "biro"?
The IPA (International Phonetic Alphabet) transcription for "biro" is /ˈbaɪ.ɹəʊ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "biro"?
Genericized trademark of BIRO, named after László Bíró, the inventor of the first commercially succesful ballpoint pen. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “biro”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is B-I-R-O - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈbaɪ.ɹəʊ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list